How to clear an ImageView in Android?

Question

I am resusing ImageViews for my displays, but at some point I don't have values to put it.

So how to clear an ImageView in Android?

I've tried:

mPhotoView.invalidate();
mPhotoView.setImageBitmap(null);

None of them have cleared the view, it still shows previous image.

Answer 1

It sounds like what you want is a default image to set your ImageView to when it's not displaying a different image. This is how the Contacts application does it:

if (photoId == 0) {
    viewToUse.setImageResource(R.drawable.ic_contact_list_picture);
} else {
    // ... here is where they set an actual image ...
}

Answer 2

Try mPhotoView.setAlpha(0) to make the image completely transparent (restore with 255).